Device for setting pallet-jewels.



A. HURWITZ. DEVICE FOR SETTING PALLET JEWELS. APPLICATION-FILED MAY 19, 1911.

Patented Feb. 6, 1912.

2 SHEETS-SHEET 1.

iCILUMUIA PLANOGRAPH CO..\\ASHINGTON, 01c

, A; HURWITZ. DEVICE FOR SETTING PALLET JEWELS.

APPLIUATION FILED MAY 19, 1911. 1,016,829. Pa n ed Feb-6, 1912.

2 SHEETS-SHEET 2.

COLUMBIA IMNOGRAPH c0" WASHINGTON, D. c.

ABRAHAM HURWI'IZ, OF NEW YORK, N. Y.

DEVICE FOR SETTING PALLET-JEWELS.

Specification of Letters Patent.

Application filed May 19, 1911.

Patented Feb. 6, 1912.

Serial No. 628,292.

To all whom it may concern:

Be it known that I, ABRAHAM HURwITz, a subject of the Empire of Russia, residing at 43 Forsyth street, in the county of New York, State of New York, have invented a new Device for Setting Pallet-Jewels, of which the following is a specification.

My invention relates to the setting of the pallet jewels into the levers of watches of all sizes and makes. I

The object of my device is to enable the watchmaker to set the pallet jewels with greater ease and accuracy than is possible at present. The device provides a condition similar to that existing in the watch in which the pallet ewels are to be set. I attain this object by means of a novel device, the preferred embodiment of which is illustrated in the accompanying drawings and will now be described, the essentials of the V invention being pointed out in the appended claims.

In the drawings which form a part of this specification: Figure 1 is a plan view of the device; Fig. 2 is a section on the line 22 of Fig. 3; Fig. 3 is a section on the line 33 of Fig. 1; Fig. 4: is a detail view; Fig. 5 is a sectional plan view on the line 55 of Fig. 6, showing the pallet in position; Fig. 6 is a section on the line 66 of Fig. 5; Fig. 7 is a plan view of the auxiliary disk in position; Fig. 8 is a plan view showing the auxiliary disk in a different position; Fig. 9 is a plan view showing the disk in position and a different form of lever; and Fig. 10 is a detail view of a measuring disk or escape-wheel substitute.

The body of the device may be in the form of a flat circular casing, comprising the top plate 9, the bottom plate X, and the interposed annular side wall W. The body may be provided on its underside with legs Y for supporting it in a horizontal position, which legs may have screw extensions for securing the parts of the body together. The body may be provided at one side with a radially-projecting handle Z.

Two relatively-movable gage members are employed adapted to be applied to the centers of the escape-wheel and pallet staff in a watch. These are preferably removable, and are shown in the form of parallel, upward-projecting pins A and B. The pin A is shown as being threaded at its lower end for insertion into the tapped opening in the top plate T. It may be screwed and 'un screwed by means of a suitable key The other pin B is mounted in the overhanging, vertical socket portion of an arm t, the lower end of which passes through a straight slot in the top plate 1" and is fixed to a rectilinearly movable slide D on the underside of the top plate. In this way the pm B maybe caused to move toward and from the pin A until the two pins coincide I with the centers of the escape wheel and pallet in the watch, as indicated by dotted lines in the drawing. In the form of ad justing and setting means shown the slide D is provided with a rack portion which meshes with a gear E, which may be rotated by a pivoted handle I-I having a gear segment on its inner end. The slide is clamped in its adjusted position by means of a screw P. A register or indicator is connected with the gage pins. This register is illustrated as consisting of a graduated and numbered dial K and a rotatable indicating-hand G, inclosed within a frame d and suitably covered by a glass disk. The hand G is shown as connected with the slide D by means of a pinion F on the shaft of the hand G meshing with the gear E. This gaging operation establishes the distance on the device between the lever and the center of any one of a number of movable and replaceable disks or escape-wheel substitutes which may be mounted on the body of the device. Center means are provided for holding one of these disks on the body or relativelystationary part of the device, and the position of the lever on the device is established by the position of the movable member or arm 25. In the particular construction illustrated the disk, indicated at n in Figs. 5 and 6 (another being shown in Fig. 10) is centered by means of the same tapped opening which received the pin A, a screw N being provided to engage with this tapped opening and to clamp the disk against the top plate r. The means for holding the lever, one of which is indicated at L in Figs. 5 and 6, may be removable from the member t. In the particular construction illustrated it is shown as a pin M, which is adapted to be received in the same socket portion of the member t which held the gage pin B, and may be clamped in position by means of the screw C. The lower end of the pin M has a tapering socket opening for the reception of the pallet stafl. Thus, the escape-wheel substitute and the lever are preferably held in the positions formerly occupied by the gage pins A and B.

Thirty of the disks n constitute a set.

5 These disks or substitutes range in size from Number 1 to and are marked accordingly to correspond with the parts and subdivisions of the register dial K. This dial is provided with major divisions numbered 0 from naught to ten, each major division being divided into thirds 'by smaller graduations. Number 1 on the dial corresponds to the largest size of an escapement in a watch, and 10% corresponds to the smallest size of an escapement. Each of the disks n substitutes in size the inner circle of the escapewheel of a watch, and constitutes one of the three limits which fix the position of the pallet jewels. Thus, the register automatii cally indicates which of the disks n is to be positioned on the body of the device.

Movable gages or positioning abutments are provided for locating the pallet jewels in proper angular relation, these gages being constrained to move relatively to the censtruction illustrated there are two slidable ter for the disk at and at a fixed angle to each other corresponding to the angle between the faces of the pallet jewels, namely an angle of 54%? In the particular con- 0 the angular position of the lever; For this purpose I employ a slidable and rotatable regulator. In the particular construction illustrated there is a slidable plate V, on which is pivoted the double-ended arm V. The inner end of the arm V is wedge-shaped to fit into the roller slot of the lever. The outer end of the arm cooperates with a series of graduation marks cut in the rim of the plate V. The part V may be set by means of the pivot screw V which passes through the plate V and into the end of a bar U, being received slidably in a slot in the top plate 7-. Another screw connects the operating bar U and the plate V, so as to hold the latter against rotating.

The operation of this illustrated preferred embodiment of the device is as follows. The parallel upright gage pins A and B are in serted, respectively, into the body or stationary part of the device and into the movable member t. The pin B is now moved toward or from the pin A by manipulation of the handle H, until the distance between the pins is the same as the distance between the axes of the escape-wheel and of the pallet staff in the watch as indicated by dotted lines. Since the supports for the gage pins are also the supports for the escape-wheel-substitute and the pallet, the said substitute and pallet when placed on the device will be spaced at this distance. In other words the supports for the escapewheel-substitute and the pallet are adjustable toward and from each other, and gaging devices to be applied to the watch are mounted on these supports so as to enable these supports to be adjusted to the proper distance from each other, so that the centers of the escape-wheel-substitute and the pallet will be at the same distance from each other as the centers for the escapewheel and pallet in the watch. The screw P is now tightened to fix the slide D and the arm 6 in the position thus established. The pins A and B are next removed. A disk 71, of the size indicated 011 the dial K of the register is now placed upon the body of the device and held in position by the screw N. The lever L is placed on the top plate 1', and is located and held at the proper distance from the disk 11. by means of the member t and the pin M which is inserted therein. The disk at forms the limit for the sliding faces of the pallet ewels. The angular relation of the inner faces of the pallet jewels is established by the gage or abutment lugs Each pallet jewel is placed in a receiving slot T of the lever L, so that one side of the jewel rests on the surface of the plate 1*, one side rests against a projecting lug j, and the sliding face rests against the disk n. Thus, each jewel is held in a position corresponding to the position that it is to occupy in the watch, both as to the distance between the jewels and the angular relation thereof. After the lever L has been put in position, the regulator V is pushed toward the center of the device, so that its wedge-shaped end enters the roller slot of the lever, to keep the lever in the line of centers. In case one pallet is too deep or too shallow, on account of the escapement being out of angle, the regulator device V may be turned either to the right or to the left, making one part shallower or deeper as may be required.

When the positions of the pallet jewels are finally established the device is warmed by applying heat to its bottom X so that the shellac which is put on the pallet jewels melts, after which the shellac is allowed to cool, the-pallet jewels still being held in position. In this manner the pallet jewels are glued and held in proper position in the slots. The lever L is then removed from the device and is ready for use in the watch.

In many cases it will not be necessary to employ the gage pins A, B, because the size or number of escape-wheel-substitute to be employed will be known. In such event, the slide D will be adjusted until the register .or indicator indicates this number, when it will be known that the proper adjustment has been effected.

In case I have to use a lever like the one used in an Elgin watch shown at L in Fig. 7, where the lever is cross-shaped, and where the lever is in a plane higher than the pallet, an auxiliary disk at is used. The auxiliary disk is shown in Figs. 7 8 and 9; it has a recess of 542, degrees corresponding to the angle between the two slots of the device I) and c. It has a circular recess in the center to receive the head of a cross-shaped lever; it has four small holes into which fit two pins 6, f which project from the face of the device and keep the auxiliary disk in its place. In order that the auxiliary disk may not interfere with the frame of the register d Fig. 7, part of it is cut out as shown in the several figures. The auxiliary disk is placed on the surface of the device fitting partly against the frame of the register d exposing two slot 1) and c. The two pins 6 and 7 which project from the surface of the device, fit into two holes of the auxiliary disk. The lever is placed upside down, its axis fitting into the hollow of the hollow pin M, and is held there as in the case of an ordinary lever. The corresponding measuring disk or substitute n is then puton top of the auxiliary disk and above the head of the lever and is held there by the screw N.

In case we have a right angle lever g as is required for a VValtham 18 size watch, the auxiliary disk 0, is placed into position as before; and the lever is placed upside down on top of the auxiliary disk as in the previous case.

Holes h are provided in the auxiliary disk at the sides of the angular recess therein, for the reception of the guard pin of the right-angled lever. A disk or substitute n is placed on top of the disk at, and the process is as before.

In Fig. 8 is shown how provision is made for an equidistant shape of lever. The same auxiliary disk a is used but turned through an angle of about six degrees and covering up one of the slots 0. The two pins 6 and f that project from the surface of the device fit two of the holes of the auxiliary disk to keep it in place and the same process is used as before, excepting that the lugs are not used. Equidistant levers, however, are rarely used.

While I have illustrated and described in detail the preferred embodiment of my invention, it will be understood that many changes may be made and that numerous equivalent structures may be substituted for the particular form of parts shown.

I claim:

1. In a device for setting pallet jewels, the combination of a support having means whereby an escape-wheel-substitute may be held thereby, another support having means whereby a pallet may be held thereby, means for relative adjustment and setting of said supports toward and from each other, gage members carried by said supports for application to the centers of the escape-wheel and pallet staff in a watch so as to enable said supports to be relatively adjusted to the distance between such centers, and a register operated by the adjusting means for indicating the size of escape-wheel substitute to be employed in accordance with such distance.

2. In a device for setting pallet jewels, the combination of a body plate constructed for the reception of an escape-.vheel-substitute, an upward-projecting gage-pin mounted on said body plate, a slide having anarm overhanging the body plate for the support of a pallet-staff, a second upward-projecting gage-pin carried by-said arm, said pins being constructed and adapted to be applied to the centers of the escape-wheel and pallet staff in a watch, and a register connected with said slide.

8. In a device for setting pallet jewels, the combination of a removable and replaceable escape-wheel-substitute, means forholding the same, means for holding a pallet, adjustment means whereby the distance between the pallet and escape-wheel'substitute may be varied, and an indicator operated by said adjustment means and designed to indicate the various sizes of escape-wheelsubstitutes corresponding with various adjustments.

4. In a device for setting pallet jewels, the combination of a support having a center; a removable and replaceable disk, constituting a substitute for the inner circle of an escape wheel, mounted thereon, and two movable gages for locating the pallet jewels in proper angular relation, said gages being constrained to move relatively to said center and at an angle to each other corresponding to the angle between faces of the pallet jewels.

5. In a device for setting pallet jewels, the combination of a relatively stationary part, a removable and replaceable disk constituting a substitute for the inner circle of an escape-wheel, means holding the disk on said part, a member having means for engaging the pallet stafi" of a lever, means for adjusting and setting said member to position the pallet staff with respect to the center of said disk, and two movable gages for locating the pallet jewels in proper angular relation, said gages being constrained to move relatively to said center and at an angle to each other corresponding to the angle between faces of the pallet jewels.

6. In a device for setting pallet jewels, the combination of a removable and replaceable escape-wheel-substitute, means for holding the same, means for holding a pallet, adjustment means whe'rebythe distance between the pallet and escape-wheel-substitute may be varied, and gages disposed in angular relation to each other for locating the pallet jewels in proper angular relation.

7. In a device for setting pallet jewels, the combination of a relatively stationary part, center means for holding any one of a series of escape-wheel substitutes of different sizes on said part, a member having means for holding a pallet, means for adjusting and setting said member to position the pallet with respect to the center of said disk, a register connected with said member, and two movable gages for locating the pallet jewels in proper angular relation, said gages being constrained to move relatively to said center and at an angle to each other correspond ing to the angle between faces of the pallet jewels.

8. In a device for setting pallet jewels, the combination of a relatively stationary part, center means for holding any one of a series of escape-wheel substitutes of diflerent sizes on said part, a member having means for holding a lever, means for adjusting and setting said member to position the pallet with respect to the center of said disk, and the two angularly-related sliding bars Q, 0, substantially as and for the purpose set forth.

9. In a device for setting pallet jewels, the combination of a support, a removable and replaceable disk constituting a substitute for the inner circle of an escape-wheel, said disk having an axial opening therethrough, center means for holding said disk on said support engaging said opening, a support for holding a pallet, and means for producing relative adjustment of said supports toward and from each other.

10. In a device for setting pallet jewels, the combination of a support, a removable and replaceable disk constituting a substitute for the inner circle of an escape-wheel, center means for holding said disk on said support, a member having means for engaging the pallet stafi of a lever, means for adjusting and setting said member to position the lever with respect to the center of said disk, and a slidable and rotatable regulator for fixing the angular position of the lever.

11. In a device for setting pallet jewels, the combination of a support, a disk constituting an escape-wheel substitute, a larger, auxiliary disk beneath the escape-wheel substitute, said auxiliary disk having an angular'recess at one side, means for removably securing said disks to the support, means for holding the stafi of a pallet with the pallet resting on said auxiliary disk, and angularly disposed gages operating in said angular recess to locate the pallet jewels in proper angular relation.

ABRAHAM HURVVITZ.

Witnesses I'IERMAN J. KATz, ABRAHAM KATZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

